I've had a go with Knoppix. Looks like it does what Ant said initially, combined with testdisk/photorec which is what I've been trying already. Had some success though, the wife's found an older USB stick that had most of what was on the encrypted drive, she'd cut and paste the stuff from it to the new one, so I've managed to recover a fair bit. The task's still going and is constantly jumping between 45mins to 2 and half hours to finish, but finger's crossed.
:)EDITED: 19 Mar 2015 21:07 by GRAPHITONE